added github workflow

.github/workflows/model_tests.yml

@@ -0,0 +1,30 @@
+name: Model Architecture Tests
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: '3.10'
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        # Install CPU-only version of PyTorch
+        pip install torch torchvision --index-url https://download.pytorch.org/whl/cpu
+        pip install pytest
+        
+    - name: Run tests
+      run: |
+        pytest tests/test_model.py -v